Koi Princess Slot

Koi Princess special features: random bonuses and free spins galore!

One of the main reasons Koi Princess stands out is the variety that NetEnt has packed into it. While most slots have one or two bonus rounds, this one has four random features that can trigger at any time during the base game, as well as four different main bonus rounds. Add in the Bonus Bet option and the game always feels like it has something up its sleeve.

Random features

During any regular spin, the princess may suddenly lean forward and activate a random feature. You’ll be asked to pick one of three koi fish, and whichever one you choose will reveal the modifier. Here’s what you can get:

• The 5-Hit Feature

  This feature forces the reels into a guaranteed five-of-a-kind win on a random symbol. It might not always be the top-paying symbol, but it guarantees a substantial payout to break up dry spells. Think of it as a 'freebie win' that comes out of nowhere.

• Random Wilds

  The game adds between four and nine Wild symbols in random positions on the reels. Sometimes they land scattered and give you a decent win, while at other times they cluster together to give you a surprisingly big win.

• Wild Reels

  Between two and five reels turn entirely Wild for one spin. If this happens with reels 2, 3 and 4 stacked, it's almost always a huge win.

• Bonus Activation

  This gives you access to the main bonus round straight away. The game drops three Bonus symbols onto the reels and triggers one of the four major features below.

The great thing here is that these random features happen fairly often. You never feel like you’re just spinning dead reels for ages. Even a single spin can suddenly turn into a win filled with wilds or throw you into a bonus game.

Bonus features

You’ll trigger one of the four main bonus games when you land three Bonus symbols on reels 1, 3 and 5, or if you get the Bonus Activation random feature. A spin of the wheel decides which one you’ll play:

• Sure Win Free Spins

  This round starts with 10 free spins and guarantees a minimum win on every spin. Initially, the 'sure win' is set to the value of your first winning spin, but if you win more, that amount becomes the new minimum. On top of that, the game adds extra wilds as you go, so the spins keep getting more valuable. This feature is brilliant for players who hate the feeling of a “dead bonus round” where nothing pays out — this one always delivers.

• Wild Reels Free Spins

  This is another set of 10 free spins, but this time the reels light up with full stacks of wilds. Each spin randomly selects between one and five reels to turn completely wild. It’s a high-risk, high-reward bonus: sometimes you only get a single wild reel on the far right, but when three to four reels go wild together, the wins can be huge.

• Coin Win

  The simplest of them all — an instant payout worth between 10x and 30x your total bet. It's quick and straightforward, though not as thrilling as the free spins. However, if you're betting big, it can significantly boost your balance without any waiting around.

• Bonus Wheel

  This one plays out like a little board game. You move around a three-tiered wheel by rolling dice and collecting coin wins and multipliers as you go. Arrow symbols let you progress deeper into the wheel, where the rewards are bigger. Your goal is to reach the centre, where you can win the “Jackpot Coin Win”, which is worth between 25 and 250 times your bet. The wheel can also send you directly to the free spins rounds along the way, doubling as a gateway to the other bonuses. Although it is a slower-paced feature, it adds a bit of suspense and variety to the game.

Bonus Bet option

Finally, there’s the Bonus Bet button, which gives you some control over the volatility. Activating it doubles the cost of each spin, but you get some real benefits:

• Random and Bonus Features trigger more often.
• The rewards in the Bonus Wheel are upgraded to higher values.
• The guaranteed wins in Sure Win Free Spins become even bigger.

Even the RTP nudges up slightly when Bonus Bet is active (from 96.00% to 96.23%). While this is not a huge difference, it does reflect the extra potential packed into those bonuses.

The downside, of course, is that your balance drains twice as fast if you go on a losing streak. Some players like to switch Bonus Bet on and off depending on their mood and bankroll: standard mode for long, steady play and Bonus Bet mode for chasing those big, feature-packed moments.